Benchmark: test b@b URLPattern full

Tests:

URL
new RegExp("^([^./]+\\.)*slack\\.com/coucou").test("sub1.sub2.slack.com/coucoucou")
URLPattern full
new URLPattern("http{s}?://{*.}?slack.com/coucou*").test("https://sub1.sub2.slack.com/coucoucou")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
URL
URLPattern full

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser/OS: Chrome 121 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
URL	5817775.5 Ops/sec
URLPattern full	37783.5 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

I'll break down the benchmark and its options for you.

**Benchmark Definition**
The benchmark is defined by two test cases:

1. **URL**: This test case uses `new RegExp()` to create a regular expression that matches any string starting with "slack.com/coucou" (case-insensitive) followed by a dot and then any characters except a dot.
2. **URLPattern full**: This test case uses the new URL pattern syntax (`URLPattern`) to match the same pattern as the previous one.

**Options compared**
The two options being compared are:

* Using `new RegExp()` with regular expressions
* Using `URLPattern` with the new URL pattern syntax

**Pros and Cons**

1. **Regular Expressions (RegEx)**
	* Pros:
		+ More flexible and powerful for matching complex patterns.
		+ Works in most environments, including JavaScript engines that don't support `URLPattern`.
	* Cons:
		+ Can be slower due to the overhead of compiling a regular expression.
		+ May not be as readable or maintainable for simple pattern matching.
2. **URL Pattern**
	* Pros:
		+ Faster execution speed due to the optimized engine in modern browsers and Node.js.
		+ More readable and maintainable than regular expressions for simple patterns.
		+ Officially supported by Mozilla and Google.
	* Cons:
		+ Limited support in older browsers or environments that don't have a modern JavaScript engine.

**Library/Functionality Used**
In the test case, `URLPattern` is used. This library was introduced in ECMAScript 2021 (ES2021) as part of the URL API. It provides an efficient way to match URLs against patterns, which can be more readable and performant than using regular expressions.

**Special JS Feature/ Syntax**
No special JavaScript features or syntax are required for these benchmarks, other than modern JavaScript engines that support `URLPattern`.

**Other Alternatives**
For simple pattern matching, alternative approaches include:

* Using a dedicated library like `regex-string` (a polyfill for the `regex` function) or `regexp-compiler`
* Implementing your own regular expression engine
* Using a string manipulation library like `string-match` (a simple string matching library)

However, these alternatives might not be as efficient or readable as using `URLPattern`, especially when it comes to modern browsers and Node.js.

**Benchmark Preparation Code**
Since the benchmark definition includes script preparation code, it's likely that the test cases are already set up with the necessary variables or functions to execute the regular expression or URL pattern matching.

In this case, the script preparation code is not provided in the benchmark definition, so we can't inspect its contents. However, based on the `Benchmark Definition` and `Test Name`, it's likely that the script preparation code involves creating an instance of `RegExp` for the "URL" test case or a `URLPattern` instance for the "URLPattern full" test case.

Please note that without the actual benchmark code, we can't provide more specific insights into the script preparation code.

Related benchmarks:

test b@b URLPattern full (version: 0)

Comparing performance of: URL vs URLPattern full

Created: 2 years ago by: Guest

Jump to the latest result

URL

URLPattern full

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):